CVE-2021-31800

描述

Multiple path traversal vulnerabilities exist in smbserver.py in Impacket through 0.9.22. An attacker that connects to a running smbserver instance can list and write to arbitrary files via ../ directory traversal. This could potentially be abused to achieve arbitrary code execution by replacing /etc/shadow or an SSH authorized key.

如何修補 CVE-2021-31800

要修補 CVE-2021-31800,請將受影響套件升級到下列已修補版本。

• —升級至 0.9.22-2 或更新版本
• —升級至 0.9.23 或更新版本
• —升級至 49c643bf66620646884ed141c94e5fdd85bcdd2f 或更新版本

CVE-2021-31800 正在被利用嗎?

中等 — EPSS 為 19.3%,可持續追蹤但非最高優先。

受影響套件(3)

• from 0, < 0.9.22-2
• from 0, < 0.9.23
• from 0, < 49c643bf66620646884ed141c94e5fdd85bcdd2f | >= 0.9.10, < 0.9.23

CVSS 分數

參考連結(19)

• ADVISORYgithub.com/advisories/GHSA-mj63-64x7-57xf
• ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-31800
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2021-31800
• PATCHgithub.com/fortra/impacket